The Capacity of Wireless Channels: A Physical Approach

Provided by: Cornell University
Topic: Mobility
Format: PDF
The capacity of Multiple-Input Multiple-Output (MIMO) channels has been considered to be severely limited by the size of antenna arrays. The capacity scaling for a three-dimensional network and the degree-of-freedom analysis for a polarimetric antenna array were provided based on the spherical vector wave decomposition, and both showed the number of usable channels is proportional to the surface area enclosing the transmitter. In this paper, the capacity of wireless channels is characterized based on electromagnetic and antenna theory with only minimal assumptions. The authors assume the transmit antenna array of arbitrary configuration is confined in a spherical region and the receive antenna array is isotropically uniform.

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